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Mount's Durometer Ratings

September 11, 2023 3 min read

Mount's Durometer Ratings

Mount's Durometer Ratings

Understanding Durometer Ratings for Polyurethane Motor Mounts

When selecting Innovative's polyurethane motor mounts, understanding durometer ratings is crucial. Durometer ratings indicate the hardness or firmness of the polyurethane material used in the mounts. Innovative Mounts offers a range of durometer options to cater to various performance needs. Let's delve into this important factor and how it influences your motor mount selection.

I. What is Durometer?

Durometer is a measure of material hardness, specifically how resistant it is to indentation or deformation. In the context of polyurethane motor mounts, durometer gauges the stiffness or softness of the polyurethane compound used. Durometer ratings are typically expressed on the Shore A scale, which is suitable for measuring the hardness of flexible materials like polyurethane.

II. The Shore A Scale

The Shore A scale is commonly used to rate the hardness of elastomeric materials, including polyurethane. Durometer values on this scale typically range from 0 to 100, with higher values indicating greater hardness or stiffness. Here's a breakdown of how durometer ratings on the Shore A scale relate to polyurethane motor mounts:

  1. Softer Durometers (e.g., 60A) : Lower durometer ratings indicate softer polyurethane. These mounts provide more flexibility and vibration dampening. They are often chosen for comfort-oriented applications, where reducing NVH (Noise, Vibration, Harshness) is a priority.
  2. Medium Durometers (e.g., 75A) : Mid-range durometer ratings offer a balanced compromise between comfort and performance. They provide decent vibration isolation while maintaining rigidity for improved engine stability.
  3. Harder Durometers (e.g., 95A) : Higher durometer ratings indicate harder polyurethane. These mounts are ideal for high-performance applications where maximum engine stability and power transfer are essential. They minimize engine movement and enhance throttle response.


III. Choosing the Right Duromete

Selecting the appropriate durometer for your polyurethane motor mounts depends on your specific needs and driving style:

  • Daily Driver/Street Use : If your vehicle is primarily for daily commuting and comfort is essential, softer durometers (e.g., 50A or 60A) are a suitable choice. They reduce cabin vibrations and absorb road imperfections.
  • Performance/Track Use : For enthusiasts seeking improved throttle response and stability during aggressive driving or track days, harder durometers (e.g., 85A or 95A) provide the necessary support to minimize engine movement.
  • Balanced Use : If you want a well-rounded solution, medium durometers (e.g., 70A or 75A) strike a balance between comfort and performance. They offer decent vibration dampening while maintaining stability.

IV. Innovative Mounts' Durometer Options

Innovative Mounts offers a range of durometer options, allowing you to fine-tune your motor mounts to your specific needs. Consider your driving preferences, whether you prioritize comfort or performance, and the type of driving you do most frequently when selecting the durometer rating for your polyurethane motor mounts. This choice will significantly impact your vehicle's behavior and your overall driving experience.  

We hope this guide has helped you understand the significance of durometer ratings in selecting the right polyurethane motor mounts for your needs. If you require further assistance or have any questions, our team is here to provide expert advice and guidance.

Now that you're equipped with this knowledge, we invite you to take the next step: select your vehicle and order your parts from Innovative Mounts. Tailor your driving experience to your preferences and needs by choosing the ideal durometer rating for your polyurethane motor mounts. Your journey to enhanced vehicle performance and comfort starts here!